CN111171242A - Resin composition and articles made therefrom - Google Patents

Resin composition and articles made therefrom Download PDF

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Publication number
CN111171242A
CN111171242A CN201811506956.3A CN201811506956A CN111171242A CN 111171242 A CN111171242 A CN 111171242A CN 201811506956 A CN201811506956 A CN 201811506956A CN 111171242 A CN111171242 A CN 111171242A
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resin
weight
resin composition
parts
copper foil
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CN201811506956.3A
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CN111171242B (en
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余奕飞
徐景舷
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Elite Material Co Ltd
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Elite Material Co Ltd
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    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
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    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
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    • C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
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    • C08L33/04—Homopolymers or copolymers of esters
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    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08L79/085—Unsaturated polyimide precursors
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/0622—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
    • C08G73/0627—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring
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    • C—CHEMISTRY; METALLURGY
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    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets

Abstract

The invention discloses a resin composition and a product prepared from the same. The resin composition comprises: 30 parts by weight of a thermosetting resin; 50 to 125 parts by weight of a maleimide resin; and 5 to 35 parts by weight of a monofunctional long-chain alkyl acrylate monomer. The resin composition disclosed by the invention has proper viscosity and can meet the requirement of good filling performance under the requirement of maintaining high glass transition temperature.

Description

Resin composition and articles made therefrom
Technical Field
The present invention relates to a resin composition, and more particularly, to a resin composition comprising a thermosetting resin, a maleimide resin and a monofunctional acrylic long-chain alkyl ester monomer, which can be used for preparing a prepreg, a resin film, a copper foil-attached resin film, a laminate or a printed circuit board.
Background
The mainstream copper foil substrate sold in the market at present is mainly prepared from a resin composition which takes epoxy resin as a main resin and takes benzoxazine resin, dicyandiamide or phenolic resin as a main hardening agent, and materials such as a bromine-containing or phosphorus-containing flame retardant and an inorganic filler are added. However, the heat resistance and dielectric properties of the material are difficult to meet the requirements of the growing electronic product market.
However, a large amount of maleimide resin is added into a thermosetting resin system, so that the resin is easy to react excessively and violently at a high temperature, and after the prepreg is prepared, the problem of excessively high viscosity of the prepreg exists, so that the flowability of the resin is poor, the substrate is not flat, or glue cannot be filled in a build-up layer of a circuit board, and the performance of the prepared circuit board is poor.
Therefore, it is a problem to be solved how to develop a prepreg having a suitable viscosity and a good underfill property, while maintaining a high glass transition temperature.
Disclosure of Invention
One of the main objects of the present invention is to provide a resin composition, comprising: 30 parts by weight of a thermosetting resin; 50 to 125 parts by weight of a maleimide resin; and 5 to 35 parts by weight of a monofunctional long-chain alkyl acrylate monomer.
In one embodiment, the thermosetting resin comprises an epoxy resin, a polyphenylene ether resin, a cyanate ester resin, a benzoxazine resin, a phenol resin, styrene maleic anhydride, or a combination thereof.
For example, the thermosetting resin may include 4 to 20 parts by weight of an epoxy resin, 3 to 20 parts by weight of a cyanate ester resin, and 5 to 20 parts by weight of a benzoxazine resin.
In one embodiment, the maleimide resin comprises 4,4 '-diphenylmethanebismaleimide (4, 4' -diphenylmethanmaleimide), phenylmethaneimide oligomer (oligomer of diphenylmethanmaleimide) (or polyphenylmethylenemaleimide), m-phenylenedimaleimide (m-phenylenedimaleimide), bisphenol A diphenyletherbismaleimide (bisphenoxide A diphenylmethanimide), 3 '-dimethyl-5, 5' -diethyl-4,4 '-diphenylmethanebismaleimide (3, 3' -dimethyl-5,5 '-diethyl-4, 4' -diphenylmethanismeimide), 4-methyl-1, 3-phenylenedimaleimide (4-methyl-1, 3-phenylenedimaleimide), 4-diphenylmethanebismaleimide (4-methyl-1, 3-diphenylmethanimide), 2,4-trimethyl) hexane (1, 6-bismalemide- (2,2, 4-trimethy) hexane), 2, 3-dimethylbenzylmaleimide (N-2,3-xylylmaleimide), 2, 6-dimethylbenzylmaleimide (N-2, 6-xylylenemaleimide), N-phenylmaleimide (N-phenylmaleimide), maleimide compounds containing aliphatic long chain structures, or combinations thereof. The maleimide resin of the present invention also encompasses prepolymers of the aforementioned compounds, for example, a prepolymer of a diallyl compound and a maleimide compound, a prepolymer of a diamine and a maleimide compound, a prepolymer of a polyfunctional amine and a maleimide compound, or a prepolymer of an acidic phenol compound and a maleimide compound, without being particularly limited thereto.
In one embodiment, the monofunctional long chain alkyl acrylate monomer has the following structure:
Figure BDA0001899245680000021
wherein R is hydrogen or C1To C6And n is an integer of 6 to 40.
In one embodiment, the monofunctional long chain alkyl acrylate monomer has a molecular weight of less than or equal to 1000.
In one embodiment, the resin composition of the present invention further comprises the following performance modifiers: small molecule vinyl compound, amine curing agent, phenoxy resin, polyester, polyolefin resin or combination thereof. For example, the resin composition of the present invention may further include 20 to 40 parts by weight of polyester.
In one embodiment, the resin composition of the present invention further includes a flame retardant, an inorganic filler, a hardening accelerator, a solvent, a coupling agent, a coloring agent, a toughening agent, or a combination thereof.
The resin composition of the present invention can be made into the following articles: prepreg, resin film with copper foil, laminate, and printed wiring board.
In one embodiment, an article made from the resin composition of the present invention has the following characteristics: the glass transition temperature measured by a dynamic mechanical analyzer according to the method described in IPC-TM-6502.4.24.4 is 200 ℃ or higher.
In one embodiment, an article made from the resin composition of the present invention has the following characteristics: the tensile force of the copper foil measured by a universal tensile strength tester according to the method of IPC-TM-6502.4.8 is more than or equal to 3.4 lb/in.
In one embodiment, articles made from the resin composition of the present invention have a minimum kinematic viscosity value of less than or equal to 500Pa · s.
In one embodiment, an article made from the resin composition of the present invention is visually observed to have no void (air bubble) generation after the underfill test.
Detailed Description
To enable those skilled in the art to understand the features and effects of the present invention, the general description and definitions will be made with respect to terms and phrases used in the specification and claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In this document, the terms "comprising," "including," "having," "containing," or any other similar term, are intended to be open-ended franslational phrase (open-ended franslational phrase) and are intended to cover non-exclusive inclusions. For example, a composition or article comprising a plurality of elements is not limited to only those elements recited herein, but may include other elements not expressly listed but generally inherent to such composition or article. In addition, unless expressly stated to the contrary, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". For example, the condition "a or B" is satisfied in any of the following cases: a is true (or present) and B is false (or not present), a is false (or not present) and B is true (or present), both a and B are true (or present). Furthermore, in the present disclosure, the terms "comprising," "including," "having," "containing," and "containing" are to be construed as specifically disclosed and also cover both closed and semi-closed conjunctions, such as "… comprising" and "… comprising" consisting essentially of.
All features or conditions defined herein as numerical ranges or percentage ranges are for brevity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to have covered and specifically disclosed all possible subranges and individual numerical values within the ranges, particularly integer numerical values. For example, a description of a range of "1 to 8" should be considered to have specifically disclosed all subranges such as 1 to 7, 2 to 8, 2 to 6, 3 to 6, 4 to 8, 3 to 8, etc., particularly the subranges bounded by all integer values, and should be considered to have specifically disclosed individual values such as 1,2, 3, 4, 5, 6, 7, 8, etc. within the range. Unless otherwise indicated, the foregoing explanatory methods apply to all matters contained in the entire disclosure, whether broad or not.
If an amount or other value or parameter is expressed as a range, preferred range, or a list of upper and lower limits, then it is understood that all ranges subsumed therein as either the upper or preferred value for that range and the lower or preferred value for that range are specifically disclosed herein, regardless of whether ranges are separately disclosed. Further, when a range of numerical values is recited herein, unless otherwise stated, the range is intended to include the endpoints thereof, and all integers and fractions within the range.
In this context, a numerical value should be understood to have the precision with which the numerical value is significant, provided that the resulting improved visual appearance is achieved. For example, the number 40.0 should be understood to cover a range from 39.50 to 40.49.
In this context, for the use of Markush group (Markush group) or tabbed terminologyTo describe features or examples of the invention, those skilled in the art will appreciate that subgroups of all members of the markush group or option list or any individual member may also be used to describe the invention. For example, if X is described as "selected from the group consisting of1、X2And X3The group "also indicates that X has been fully described as X1Is claimed with X1And/or X2And/or X3Claim (5). Furthermore, to the extent that markush group or option language is used to describe features or examples of the invention, those skilled in the art will recognize that subgroups of all members or any combination of individual members of the markush group or option list may also be used to describe the invention. Accordingly, for example, if X is described as "selected from the group consisting of1、X2And X3Group consisting of "and Y is described as" selected from Y1、Y2And Y3The group "formed indicates that X has been fully described as X1Or X2Or X3And Y is Y1Or Y2Or Y3Claim (5).
The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application thereof. Furthermore, there is no intention to be bound by any theory presented in the preceding prior art or the summary or the following detailed description or examples.
In view of the foregoing, it is a primary object of the present invention to provide a resin composition comprising: 30 parts by weight of a thermosetting resin; 50 to 125 parts by weight of a maleimide resin; and 5 to 35 parts by weight of a monofunctional long-chain alkyl acrylate monomer.
Herein, the thermosetting resin includes an epoxy resin, a polyphenylene ether resin, a cyanate ester resin, a benzoxazine resin, a phenol resin, styrene maleic anhydride, or a combination thereof, and is not limited thereto.
For example, the epoxy resin may be various types of epoxy resins known in the art, including, but not limited to, bisphenol a epoxy resins, bisphenol F epoxy resins, bisphenol S epoxy resins, bisphenol AD epoxy resins, novolac (novolac) epoxy resins, trifunctional (trifunctional) epoxy resins, tetrafunctional (tetrafunctional) epoxy resins, polyfunctional (polyfunctional) novolac epoxy resins, dicyclopentadiene (DCPD) epoxy resins, phosphorous-containing epoxy resins, p-xylene (p-xylene) epoxy resins, naphthalene (naphthalene) epoxy resins (e.g., naphthol-type epoxy resins), benzofuran (benzofuran) type epoxy resins, and isocyanate-modified (isocyanate-modified) epoxy resins, for example, and without limitation thereto.
The novolac epoxy resin may be phenol novolac epoxy resin, bisphenol a novolac epoxy resin, bisphenol F novolac epoxy resin, biphenyl novolac epoxy resin, phenol benzaldehyde (phenol benzaldehide) epoxy resin, phenol aralkyl novolac epoxy resin, or o-cresol novolac (o-cresol novolac) epoxy resin.
Wherein the phosphorus-containing epoxy resin can be DOPO (9, 10-dihydro-9-oxa-10-phosphoanthrene-10-oxide) epoxy resin, DOPO-HQ epoxy resin or the combination thereof. The aforementioned DOPO epoxy resin may include one, two or more of DOPO-containing phenolic novolac epoxy resin (DOPO-stabilizing phenolic novolac resin), DOPO-containing cresol novolac epoxy resin (DOPO-stabilizing cresol novolac resin), and DOPO-containing bisphenol a novolac epoxy resin (DOPO-stabilizing bisphenol-a novolac resin). The aforementioned DOPO-HQ epoxy resin may include one, two or more of DOPO-HQ-containing phenol novolac epoxy resin (DOPO-HQ-containing phenolic novolac epoxy resin), DOPO-HQ-o-methyl phenol novolac epoxy resin (DOPO-HQ-containing cresolo novolac epoxy resin), and DOPO-HQ-containing bisphenol A novolac epoxy resin (DOPO-HQ-containing bisphenol-A novolac epoxy resin).
The polyphenylene ether resin may be any of a variety of polyphenylene ether resins known in the art including, but not limited to, hydroxyl-terminated polyphenylene ethers, vinyl-terminated polyphenylene ethers, maleimide-terminated polyphenylene ether resins, anhydride-terminated polyphenylene ether resins, or cyanate-terminated polyphenylene ether resins. The terminal vinyl polyphenylene ether is vinyl-terminated polyphenylene ether, and the vinyl-terminated polyphenylene ether is reactive vinyl. Specific examples include, but are not limited to, vinylbenzylpolyphenylene ether resins (e.g., OPE-2st, available from Mitsubishi gas chemical), methacrylate polyphenylene ether resins (e.g., SA-9000, available from Sabic), vinylbenzyl-modified bisphenol A polyphenylene ether resins, vinyl-extended polyphenylene ether resins, or combinations thereof, without limitation thereto.
The cyanate ester resin is not particularly limited, and any cyanate ester having an Ar-O-C.ident.N structure may be used, wherein Ar may be a substituted or unsubstituted aromatic, phenolic, bisphenol A phenolic, bisphenol F phenolic, or phenolphthalein. The above cyanate ester resin may be, for example, cyanate ester resins produced by Lonza under trade names of primaset PT-15, PT-30S, PT-60S, BA-200, BA-230S, BA-3000S, BTP-2500, BTP-6020S, DT-4000, DT-7000, ULL950S, HTL-300, CE-320, LVT-50, LeCy, etc., and is not limited thereto.
The benzoxazine resin can be any one or more benzoxazine resins suitable for prepreg, resin film with copper foil, laminated board or printed circuit board. Specific examples include, but are not limited to, bisphenol a type benzoxazine resins, bisphenol F type benzoxazine resins, phenolphthalein type benzoxazine resins, dicyclopentadiene benzoxazine resins, phosphorus-containing benzoxazine resins, diamine type benzoxazine resins, and phenyl-, vinyl-or allyl-modified benzoxazine resins. Suitable commercially available commercial products include those sold under the trade name LZ-8270 (phenolphthalein type benzoxazine resin), LZ-8298 (phenolphthalein type benzoxazine resin), LZ-8280 (bisphenol F type benzoxazine resin), LZ-8290 (bisphenol a type benzoxazine resin) as by Huntsman, or those sold under the trade name KZH-5031 (vinyl modified benzoxazine resin) or KZH-5032 (phenyl modified benzoxazine resin) as by koron industries. The diamine type benzoxazine resin may be, but not limited to, a diamine diphenyl methane benzoxazine resin, a diamine diphenyl ether type benzoxazine resin, a diamine diphenyl sulfone benzoxazine resin, a diamine diphenyl sulfide benzoxazine resin, or a combination thereof.
The phenol resin may be any one or more phenol resins suitable for prepreg, resin film, copper clad resin film, laminate or printed circuit board fabrication, and specific examples include, but are not limited to, phenol resins such as phenol resin, naphthol resin, biphenol resin and dicyclopentadiene phenol resin, and are not limited thereto.
The styrene maleic anhydride resin can be any one or more styrene maleic anhydride resins suitable for prepregs, resin films with copper foil, laminates or printed circuit boards, wherein the ratio of styrene (S) to Maleic Anhydride (MA) can be 1/1, 2/1, 3/1, 4/1, 6/1, 8/1 or 12/1, and specific examples include styrene maleic anhydride copolymers sold under the tradenames SMA-1000, SMA-2000, SMA-3000, EF-30, EF-40, EF-60 and EF-80 by Cray Valley, and are not limited thereto.
In the present invention, the thermosetting resin is not particularly limited in kind of use, and may be, for example, one or more of epoxy resin, polyphenylene ether resin, cyanate ester resin, benzoxazine resin, phenol resin, styrene maleic anhydride. Preferred classes of thermosetting resins may be epoxy resins, cyanate ester resins and/or benzoxazine resins. The epoxy resin may be used in an amount of more than 0 to 30 parts by weight, preferably 4 to 20 parts by weight, and more preferably 4 to 12 parts by weight, relative to 30 parts by weight of the total amount of the thermosetting resin. The cyanate ester resin may be used in an amount of more than 0 to 30 parts by weight, preferably 3 to 20 parts by weight, and more preferably 3 to 14 parts by weight, relative to 30 parts by weight of the total amount of the thermosetting resin. The benzoxazine resin may be used in an amount of more than 0 to 30 parts by weight, preferably 5 to 20 parts by weight, and more preferably 10 to 20 parts by weight, relative to 30 parts by weight of the total amount of the thermosetting resin.
In the present invention, the maleimide resin refers to a compound, monomer, mixture or polymer (including oligomer) having one or more maleimide functional groups in the molecule. The maleimide resin used in the present invention is not particularly limited, if not specifically indicated, and may be any one or more maleimide resins suitable for prepreg, resin film, copper foil-attached resin film, laminate or printed wiring board fabrication. Specific examples include, but are not limited to, 4 '-diphenylmethane bismaleimide, phenylmethane maleimide oligomer, m-phenylene bismaleimide, bisphenol a diphenylether bismaleimide, 3' -dimethyl-5,5 '-diethyl-4, 4' -diphenylmethane bismaleimide, 4-methyl-1,3-phenylene bismaleimide, 1,6-bismaleimide- (2,2,4-trimethyl) hexane, 2, 3-dimethylbenzylmaleimide, 2, 6-dimethylbenzylmaleimide, N-phenylmaleimide, maleimide compounds containing aliphatic long chain structures, or combinations thereof. In addition, unless otherwise specified, the maleimide-based resin of the present invention also encompasses prepolymers of the aforementioned compounds, such as a prepolymer of a diallyl compound and a maleimide-based compound, a prepolymer of a diamine and a maleimide-based compound, a prepolymer of a polyfunctional amine and a maleimide-based compound, or a prepolymer of an acidic phenol compound and a maleimide-based compound, and the like, and is not limited thereto.
For example, the maleimide resin may be a maleimide resin produced by Daiwakasei Corp, such as BMI-1000, BMI-1000H, BMI-1100, BMI-1100H, BMI-2000, BMI-2300, BMI-3000H, BMI-4000H, BMI-5000, BMI-5100, BMI-7000 and BMI-7000H, or a maleimide resin produced by K.I chemical company, such as BMI-70, BMI-80.
For example, the maleimide resin containing an aliphatic long chain structure may be a maleimide resin produced by designer molecular companies under the trade names BMI-689, BMI-1400, BMI-1500, BMI-1700, BMI-2500, BMI-3000, BMI-5000, and BMI-6000.
The resin composition of the present invention includes 50 to 125 parts by weight of the maleimide resin, for example 60, 80, 100 or 120 parts by weight, relative to 30 parts by weight of the thermosetting resin, in terms of the amount used.
In the present invention, the monofunctional long-chain alkyl acrylate monomer includes any one or more long-chain alkyl esters of monofunctional acrylic acid, wherein monofunctional means having a single reactive functional group (e.g., a carbon-carbon unsaturated double bond, such as a vinyl group), long-chain alkyl esters means alkyl esters having at least six carbon atoms, such as 6 to 40 carbon atoms, and monomer means a small molecule that has not yet undergone an addition reaction with a double bond or a meta-bond structure, but can form a polymer by an addition reaction with the same species or other molecules.
In one embodiment, the monofunctional long chain alkyl acrylate monomer has the following structure:
Figure BDA0001899245680000071
wherein R is hydrogen or C1To C6And n is an integer of 6 to 40.
For example, R may be C1To C6Including but not limited to methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, and tert-butyl, for example, methyl, ethyl, n-propyl, or isopropyl. For example, n may be 6, 8, 10, 15, 20, 25, 30, 35 or 40, and preferably n may be an integer from 10 to 30, such as an integer from 12 to 18.
In one embodiment, the monofunctional long chain alkyl acrylate monomer has a molecular weight of less than or equal to 1000. For example, the monofunctional long chain alkyl acrylate monomer can have a molecular weight of between 100 and 1000, such as between 100 and 500, or between 200 and 400.
Examples of monofunctional long chain alkyl acrylate monomers suitable for use in the present invention include, but are not limited to, products sold by Sartomer company as SR313A, SR313B, SR313NS, SR324NS, SR335, SR489D and the like, of which SR313A, SR313B, SR313NS and SR324NS are preferred.
The resin composition of the present invention includes 5 to 35 parts by weight of a monofunctional long-chain alkyl acrylate monomer, for example 10, 20 or 30 parts by weight, relative to 30 parts by weight of the thermosetting resin, in terms of the amount used.
In addition to the aforementioned ingredients, the resin composition of the present invention may further include the following property modifiers as necessary: small molecule vinyl compound, amine curing agent, phenoxy resin, polyester, polyolefin resin or combination thereof. The amount of the property adjuster to be used is not particularly limited. For example, the resin composition of the present invention may include 5 to 70 parts by weight of one or more performance modifiers, such as 10, 20, 30, 40, 50, 60, or 70 parts by weight, relative to 30 parts by weight of the thermosetting resin.
The small molecular weight vinyl compound is a vinyl compound having a molecular weight of 1000 or less, preferably a molecular weight of 100 to 900, more preferably a molecular weight of 100 to 800. In the present invention, the small molecule vinyl compound may be, for example, but not limited to, one of Divinylbenzene (DVB), bis (vinylbenzyl) ether (BVBE), bis (vinylphenyl) ethane (BVPE), triallyl isocyanurate (TAIC), triallyl cyanurate (TAC), 1,2, 4-Trivinylcyclohexane (TVCH), or a combination thereof.
The amine curing agent may include, but is not limited to, at least one of diaminodiphenyl sulfone, diaminodiphenyl methane, diaminodiphenyl ether, diaminodiphenyl sulfide, and dicyandiamide, or a combination thereof.
The phenoxy resin (phenoxy) may include, but is not limited to, phenoxy resins available from Gabriel under the product names PKHA, PKHB +, PKHC, PKHH, PKHJ, PKFE, PKHP-200 or PKHW-34, or YP50S, a product of Nissian iron chemistry.
The polyester can be obtained by esterifying an aromatic compound having a dicarboxylic acid group with an aromatic compound having a dihydroxy group. Examples of the polyester include, but are not limited to, a dicyclopentadiene structure-containing polyester and a naphthalene ring structure-containing polyester, and the polyester may preferably be a naphthalene ring structure-containing polyester. Polyesters suitable for use in the present invention include, but are not limited to, HPC-8000 or HPC-8150, sold under the trade name of Dainippon ink chemistry.
As performance modifiers, polyolefin resins include, but are not limited to: styrene-butadiene-divinylbenzene terpolymers, styrene-butadiene-maleic anhydride terpolymers, vinyl-polybutadiene-urethane oligomers, styrene-butadiene copolymers, hydrogenated styrene-butadiene copolymers, styrene-isoprene copolymers, hydrogenated styrene-butadiene-divinylbenzene copolymers, polybutadiene (a homopolymer of butadiene), methylstyrene copolymers or combinations thereof.
In one embodiment, the resin composition of the present invention comprises: 30 parts by weight of a thermosetting resin; 50 to 125 parts by weight of a maleimide resin; 5 to 35 parts by weight of a monofunctional long-chain alkyl acrylate monomer; and 20 to 40 parts by weight of a polyester.
In addition to the aforementioned components, the resin composition of the present invention may further include the following additives as necessary: flame retardants, inorganic fillers, hardening accelerators, solvents, coupling agents, colorants, toughening agents, or combinations thereof. Further, the amount of the aforementioned additives is not particularly limited without deteriorating one or more physicochemical properties of the present invention mentioned below. For example, the resin composition of the present invention may include 1 to 200 parts by weight of one or more additives with respect to 30 parts by weight of the thermosetting resin.
The flame retardant may be any one or more flame retardants suitable for use in prepregs, resin films, copper clad resin films, laminates, or printed circuit board fabrication, such as, but not limited to, phosphorus-containing flame retardants. The flame retardant preferably may comprise at least one, two or a combination of two or more of the following groups: ammonium polyphosphate (ammonium polyphosphate), hydroquinone-bis- (diphenylphosphate) (hydroquinone bis- (diphenylphosphate)), tris (2-carboxyethyl) phosphine (tri (2-carboxyethyl) phosphine, TCEP), tris (chloroisopropyl) phosphate, trimethyl phosphate (TMP), dimethyl methylphosphonate (DMMP), resorcinol bis- (dimethylphenyl phosphate) (resorcinol bis (dihydroxyphenyl phosphate), RDXP, such as commercially available products like PX-200, PX-201, PX-202), phosphazene compounds (phosphazene, such as SPB-100, SPH-100, SPV-100, melamine products like SPV-100), polyphosphate (polyphosphate), DOPO (DOPO), and derivatives or derivatives thereof, and phospho resins or derivatives thereof, Melamine cyanurate (melamine cyanurate) and tris-hydroxy ethyl isocyanurate (tri-hydroxy ethyl isocyanurate) or aluminum phosphates (e.g., products such as OP-930, OP-935, etc.).
For example, the flame retardant may be DPPO compound (e.g., double DPPO compound), DOPO compound (e.g., double DOPO compound), DOPO resin (e.g., DOPO-HQ, DOPO-NQ, DOPO-PN, DOPO-BPN), DOPO-bonded epoxy resin, etc., wherein the DOPO-PN is DOPO phenol novolac compound, and the DOPO-BPN may be DOPO-BPAN (DOPO-bisphenol A novolac), DOPO-BPFN (DOPO-bisphenol F novolac), or DOPO-BPSN (DOPO-bisphenol S novolac), etc., bisphenol-based phenol novolac compound.
The inorganic filler may be any one or more inorganic fillers suitable for prepreg, resin film, copper clad resin film, laminate or printed circuit board fabrication, and specific examples include, but are not limited to: silica (molten, non-molten, porous or hollow), alumina, aluminum hydroxide, magnesium oxide, magnesium hydroxide, calcium carbonate, aluminum nitride, boron nitride, aluminum silicon carbide, titanium dioxide, zinc oxide, zirconium oxide, mica, boehmite (AlOOH), calcined talc, silicon nitride or calcined kaolin. In addition, the inorganic filler may be in the form of spheres, fibers, plates, granules, flakes, or whiskers, and may optionally be pretreated with a silane coupling agent.
The hardening accelerator (including the hardening initiator) may include a lewis base or a lewis acid or the like as a catalyst. Wherein the lewis base may include one or more of imidazole (imidazole), boron trifluoride amine complex, ethyltriphenylphosphonium chloride (ethyltriphenylphosphonium chloride), 2-methylimidazole (2-methylimidazole, 2MI), 2-phenylimidazole (2-phenyl-1H-imidazole, 2PZ), 2-ethyl-4-methylimidazole (2-ethyl-4-methylimidazole, 2E4MI), Triphenylphosphine (TPP), and 4-dimethylaminopyridine (4-dimethylaminopyridine, DMAP). The lewis acid may include a metal salt compound, such as a manganese, iron, cobalt, nickel, copper, zinc, etc., and a metal catalyst, such as zinc octoate, cobalt octoate, etc. The cure accelerator also includes cure initiators, such as peroxides that generate free radicals, including but not limited to: dicumyl peroxide, t-butyl peroxybenzoate, dibenzoyl peroxide (BPO), 2, 5-dimethyl-2, 5-di (t-butylperoxy) -3-hexyne (25B), bis (t-butylperoxyisopropyl) benzene, or combinations thereof.
The solvent may include, but is not limited to, methanol, ethanol, ethylene glycol monomethyl ether, acetone, methyl ethyl ketone (also known as methyl ethyl ketone), methyl isobutyl ketone, cyclohexanone, toluene, xylene, methoxyethyl acetate, ethoxyethyl acetate, propoxyethyl acetate, ethyl acetate, dimethylformamide, dimethylacetamide, propylene glycol methyl ether, and the like, or a mixture thereof.
The coupling agent includes, but is not limited to, silane coupling agents, which may include silane compounds (silanes, such as, but not limited to, siloxane compounds (siloxane)), which may be further classified into aminosilane compounds (aminosilanes), epoxysilane compounds (epoxysilane compounds), vinylsilane compounds, acrylsilane compounds, methacrylsilane compounds, hydroxysilane compounds, isocyanatosilane compounds, methacryloxysilane compounds, and acryloxysilane compounds, depending on the kind of the functional group.
For example, the aforementioned coloring agent may include, but is not limited to, a dye (dye) or a pigment (pigment).
The main function of adding the toughening agent is to improve the toughness of the resin composition. Among them, the toughening agent may include, but is not limited to, a rubber (rubber) resin, a carboxyl-terminated butadiene acrylonitrile rubber (CTBN), a core-shell rubber (core-shell rubber), and the like, or a combination thereof.
The resin composition of the foregoing embodiments can be made into various articles including, but not limited to, prepregs, resin films, copper foil-attached resin films, laminates, or printed circuit boards.
For example, the resin composition of each embodiment of the present invention may be coated on a PET film (polyester film) or a PI film (polyimide film), and then baked and heated to a semi-cured state (B-Stage) to obtain a resin film.
For example, the resin composition of the embodiments of the present invention may be coated on a copper foil, and then baked and heated to be semi-cured to obtain a resin film with a copper foil, such as a Resin Coated Copper (RCC) film.
For example, the resin composition of the embodiments of the present invention can be made into a prepreg (prepreg) having a reinforcing material and a layer (generally referred to as an insulating layer) disposed on the reinforcing material, the layer is formed by heating the resin composition to a semi-cured state (B-stage) at a high temperature, and the baking temperature for manufacturing the prepreg is, for example, 130 ℃ to 180 ℃. The reinforcing material may be any one of a fiber material, a woven fabric and a non-woven fabric, and the woven fabric preferably includes a glass fiber cloth. The type of the glass cloth is not particularly limited, and may be commercially available glass cloth for various printed circuit boards, such as E-type glass cloth, D-type glass cloth, S-type glass cloth, T-type glass cloth, L-type glass cloth, or Q-type glass cloth, wherein the type of the fiber includes yarn, roving, and the like, and the form may include open fiber or non-open fiber. The aforementioned nonwoven fabric preferably includes a liquid crystal resin nonwoven fabric, such as a polyester nonwoven fabric, a polyurethane nonwoven fabric, and the like, without being limited thereto. The fabric may also include a liquid crystal resin fabric, such as a polyester fabric or a polyurethane fabric, and is not limited thereto. The reinforcing material can increase the mechanical strength of the prepreg. In a preferred embodiment, the reinforcement is optionally pretreated with a silane coupling agent. The prepreg forms an insulating layer after being subsequently heated and cured (C-stage).
For example, the resin composition of the embodiments of the present invention can be made into various laminates such as a copper clad laminate, which includes two copper foils and an insulating layer disposed between the two copper foils, and the insulating layer can be formed by curing the resin composition at high temperature and high pressure, wherein the curing temperature is, for example, between 190 ℃ and 220 ℃, preferably between 200 ℃ and 215 ℃, and the curing time is 60 to 180 minutes, preferably 90 to 120 minutes. The insulating layer may be obtained by curing the prepreg, the resin film with copper foil, or the resin film. In a preferred embodiment, the laminated board is a copper foil substrate.
In one embodiment, the laminate may be further processed by a circuit process to form a printed circuit board.
The product made of the resin composition provided by the invention has at least one or more of preferable characteristics of higher glass transition temperature, lower dielectric loss, good drilling reliability, higher copper foil tension (including common copper foil and ultrathin copper foil), lower minimum kinematic viscosity value, good inner-layer circuit board glue filling performance and the like.
For example, the resin composition or article thereof provided by the present invention may satisfy one, more or all of the following characteristics:
a glass transition temperature of 200 ℃ or higher (e.g., between 200 ℃ and 350 ℃) as measured by a dynamic mechanical analyzer by the method described in IPC-TM-6502.4.24.4;
a dielectric loss of 0.0080 or less (e.g., between 0.0050 and 0.0077, preferably between 0.0050 and 0.0070) measured at a frequency of 10GHz by the method described in JIS C2565;
the tensile force of the copper foil measured by a universal tensile strength tester according to the method described by IPC-TM-6502.4.8 is greater than or equal to 3.4lb/in (for example, the tensile force to a general copper foil with 18 micrometers or an ultrathin copper foil with 3 micrometers is between 3.4lb/in and 6.0lb/in, and preferably between 4.0lb/in and 5.2 lb/in);
a minimum kinematic viscosity value of less than or equal to 500 pas (e.g., between 200 pas and 500 pas); and
no vacuole generation was observed visually after the gel filling test;
preferably, the article of the resin composition can pass the drill reliability test without plate explosion.
In particular, the present invention provides resin compositions or articles thereof that can provide one, more or all of the following:
under a specific proportion, the monofunctional long-chain alkyl acrylate monomer is matched with the maleimide resin, so that the lower minimum kinematic viscosity value (less than or equal to 500Pa & s) and the good (qualified) glue filling property of the inner-layer circuit board can be achieved under the condition that the glass transition temperature (Tg ≧ 200 ℃) of the substrate is not influenced;
performance regulators (such as 20-40 PHR polyester) can be further added, so that the effects of maintaining dielectric loss (Df ≦ 0.0070) and high copper foil tension (RTF P/S ≧ 4.0 lb/in; 3-micron carrier copper P/S ≧ 4.0lb/in) are achieved; and
the resin composition formed by selecting 30 parts by weight of thermosetting resin, 5 to 35 parts by weight of monofunctional acrylic long-chain alkyl ester monomer, 50 to 125 parts by weight of maleimide resin and 20 to 40 parts by weight of polyester can simultaneously achieve the effects of Tg being more than or equal to 200 ℃, Df being less than or equal to 0.0070, good (qualified) drilling reliability, RTF P/S being more than or equal to 4.0lb/in, 3-micron carrier copper P/S being more than or equal to 4.0lb/in, lowest dynamic viscosity value being less than or equal to 500 Pa.s and good (qualified) inner-layer circuit board glue filling performance.
The chemical raw materials used in the preparation examples, the examples and the comparative examples of the invention are as follows:
NC-3000H: biphenyl type epoxy resins, available from Nippon Kayaku.
YX-7700: m-dimethylphenol novolac-type epoxy resins, available from Mitsubishi Chemical.
CE05 CS: phenolic cyanate ester resins, available from nature china.
PF-3500: the diamine diphenyl ether type benzoxazine resin is purchased from vinpocetine resin.
LZ-8298: phenolphthalein type benzoxazine resin, available from Huntsman.
KZH-5031: vinyl modified benzoxazine resins, available from Kolon Industries, Kolon, Korea.
HPC-8150: naphthalene ring structure containing polyesters, available from Dainippon ink Chemicals.
HPC-8000: a dicyclopentadiene structure containing polyester, available from Dainippon ink Chemicals.
BMI-2300: phenylmethaneimide, purchased from DAMIZATION CHEMICAL.
BMI-70: bis (3-ethyl-5-methyl-4-maleimidophenyl) methane, available from K.I chemistry.
SR 313A: dodecyl methacrylate (dodecyl methacrylate), available from Sartomer.
SR324 NS: octadecyl methacrylate (octadececyl methacrylate), available from Sartomer.
SR 340: 2-Phenoxyethyl methacrylate (2-phenoxymethyl methacrylate), available from Sartomer.
SR350 NS: trimethylolpropane trimethacrylate (trimethyolpramethyrate) available from Sartomer.
SR 833S: tricyclodecane dimethanol diacrylate (tricyclodecane dimethanol diacrylate) available from Sartomer.
Poly SR 313A: dodecyl methacrylate polymer, prepared by stirring dodecyl acrylate SR313A at 80 deg.C and 400r.p.m. for 1 hr, and its weight molecular weight is about 10,000.
2 PZ: 2-phenylimidazole (2-phenylimidazole), available from four nations.
Q89: the spherical silicon dioxide treated by the surface amino silane coupling agent is purchased from brocade silicon materials.
MEK: butanone, commercially available.
The analyte (sample) was prepared in the following manner, and characteristic analysis was performed according to specific conditions.
1. Prepreg preparation: the resin compositions of the following examples and the resin compositions of the following comparative examples (in parts by weight) were each selected and uniformly mixed to form a gel (varnish), the gel was placed in an impregnation tank, a glass fiber cloth was then immersed in the impregnation tank to attach the resin compositions to the glass fiber cloth, and the mixture was heated and baked at 130 ℃ for about 4 minutes to obtain prepregs.
2. Copper foil substrate (formed by pressing eight prepregs): two Reverse Treatment Foils (RTF) having a thickness of 18 μm and eight prepregs (using 2116E-glass cloth) each made of the resin composition were prepared in batches. The resin content per prepreg was about 55%. And laminating the copper foil, the eight prepregs and the copper foil in sequence, and pressing for 1.5 hours at 200 ℃ under a vacuum condition to form each copper foil substrate. Wherein eight mutually overlapped prepregs are cured (C-stage) to form an insulating layer between two copper foils, and the resin content of the insulating layer is about 55 percent.
3. No copper substrate (formed by pressing eight prepregs): and etching the copper foil substrate to remove the copper foils on the two sides to obtain a copper-free substrate which is formed by laminating eight prepregs and has a resin content of about 55%.
4. No copper substrate (laminated from two prepregs): two reversed copper foils having a thickness of 18 μm and two prepregs (using 1080E-glass cloth) each made of the resin composition were prepared in batches. The resin content per prepreg was about 70%. And laminating the copper foil, the two prepregs and the copper foil in sequence, and pressing for 1.5 hours at 200 ℃ under a vacuum condition to form each copper foil substrate. And etching the copper foil substrate to remove the copper foils on the two sides to obtain a copper-free substrate which is formed by laminating two prepregs and has a resin content of about 70%.
The respective test methods and their characteristic analysis items are described below.
Glass transition temperature (Tg)
In the glass transition temperature test, the copper-free substrate (formed by pressing eight prepregs) is selected as a sample to be tested. The glass transition temperature of the sample to be tested was measured using Dynamic Mechanical Analysis (DMA) according to the method described in IPC-TM-6502.4.24.4, the higher the glass transition temperature, the better the glass transition temperature, the unit of the glass transition temperature being C.
Dielectric loss (Df)
In the measurement of dielectric loss, the copper-free substrate (formed by laminating two prepregs) is selected as a sample to be measured. Each sample to be measured was measured at room temperature (about 25 ℃) and at a frequency of 10GHz using a microwave dielectric analyzer (purchased from AET, Japan) in accordance with the method described in JIS C2565. Lower dielectric loss represents better dielectric properties of the sample to be tested. A difference in Df value of greater than 0.0005 represents a significant difference between dielectric losses of different substrates.
Reliability of drilling
Selecting seven prepregs (using 2116E-glass fiber cloth), stacking 18-micron RTF copper foils on two sides of the outer layer, and pressing and curing for 1.5 hours under the conditions of vacuum, high temperature (200 ℃) and high pressure (360psi) according to the sequence of the copper foils, the seven prepregs and the copper foils to obtain the copper foil-containing substrate. After PCB treatment (drilling, desmearing, electroplating, etc.), a double-sided board (pitch between holes and center point of hole): 0.55mm) is obtained. Putting the double-sided board into a reflow oven at 260 ℃, performing reflow test according to the IPC-TM-6502.6.27 reflow test standard, performing reflow test for 6 times, and observing whether the double-sided board is exploded or not by visual inspection or slicing and using an optical microscope. If the plate explosion phenomenon does not exist, marking the plate explosion phenomenon as qualified, and representing that the test is passed; if the plate explosion phenomenon occurs, the plate is marked as unqualified, and the test is not passed.
Copper foil tension (lifting tension, P/S)
Cutting a copper foil substrate (formed by pressing eight prepregs) into a rectangular sample with the width of 24 mm and the length of more than 60 mm, etching the copper foil on the surface, only reserving a strip-shaped copper foil with the width of 3.18 mm and the length of more than 60 mm, measuring by using a universal tensile strength tester at room temperature (about 25 ℃) according to the method of IPC-TM-6502.4.8, and measuring the force required for pulling the copper foil from the surface of the insulating layer of the substrate, wherein the unit is lb/in. Generally, a difference in copper foil tension greater than 0.3lb/in represents a significant difference in copper foil tension characteristics from substrate to substrate.
3 micron ultra-thin copper foil tension
Firstly, a core plate (core) is manufactured by the following method: preparing four first semi-solidified sheets (7628E-glass fiber cloth is used, RC is 42 percent), respectively laminating a copper foil on two sides of the four laminated semi-solidified sheets, and then laminating and solidifying for 1.5 hours under the conditions of vacuum, high temperature (200 ℃) and high pressure (360psi) to obtain the core plate containing the copper core. The core plate is processed by a browning line process to obtain a browning core plate. Two prepregs are stacked on each of both surfaces of the outer layer of the brown core board, for example, two prepregs impregnated with 2116E-glass fiber cloth are the same as those prepared from the resin composition of the same example set, or the same group of prepregs prepared from the resin composition of the same comparative example set (the resin content of each prepreg is about 55%), and a carrier-attached ultra-thin copper foil (MT18-EX, available from Mitsui metals) of 3 μm is stacked on each of the two prepregs, and the prepregs, the brown core board, the prepregs, and the carrier-attached ultra-thin copper foil are stacked in this order according to the carrier ultra-thin copper foil (the ultra-thin copper surface is bonded to the prepregs, and the carrier layer is far from the prepregs), and then are laminated at 200 ℃ for 1.5 hours under a vacuum condition to form the ultra-thin laminated board. And stripping the carrier copper on the ultrathin copper surface of the outer layer of the laminated board, and carrying out whole-board electroplating on the outer layer copper foil until the thickness of the whole copper layer is 35 microns by omitting a cleaning procedure to form the four-layer circuit board. Then, the four-layer circuit board was cut into a rectangular sample having a width of 24 mm and a length of more than 60 mm, and the surface copper foil was etched, leaving only the strip-shaped copper foil having a width of 3.18 mm and a length of more than 60 mm unetched, and measured by the method described in IPC-TM-6502.4.8 at room temperature (about 25 ℃) using a universal tensile strength tester, and the amount of force required to pull the copper foil from the surface of the insulating layer of the substrate was measured in lb/in. Generally speaking, the tension difference of the ultra-thin copper foil is larger than 0.3lb/in, which represents that the tension characteristics of the ultra-thin copper foil of different substrates have significant difference.
Minimum kinematic viscosity (for example, for prepreg, resin film, copper foil-attached resin film, etc.)
About 2 +/-0.05 g of rubber powder collected after the prepreg is kneaded is taken and poured into an ingot type mold, a manual ingot machine is used for ingot forming at the pressure of 1psi, a dynamic viscosity tester (CFT-100D, purchased from Sanpeng instruments) is used for testing, the test temperature interval is 60-160 ℃ at the pressure of 4kgf and the temperature rise rate of 2 ℃/min, and the lowest viscosity point is selected as the lowest dynamic viscosity value. The lower the minimum kinematic viscosity value, the lower the tack, the better the flowability of the resin when pressed. When the minimum kinematic viscosity is more than 500 pas, the tackiness is too high, and when the substrate is pressed, the surface is not smooth due to poor flow tackiness, the adhesion is poor, and the thickness of the substrate is not uniform.
Inner layer circuit board filling (filling test)
1 prepreg (the resin content of each prepreg is about 73%) prepared by impregnating each sample to be tested (each group of examples or comparative examples) with 1078E-glass fiber cloth is taken, an RTF copper foil with the thickness of 18 microns is respectively laminated on the upper side and the lower side of the prepreg, and then the copper foil substrate is formed by pressing. And performing line etching on the surface of the copper foil substrate and then performing browning to form the browned circuit substrate containing copper. On the outer side of the circuit on both surfaces, 1 prepreg (resin content about 75%) made of 1027E-glass fiber cloth and 18 μm thick RTF copper foil were sequentially stacked, and then laminated again to form a second copper foil-containing circuit board. And etching to remove the copper foil on the surface of the second copper foil-containing circuit substrate to obtain a second circuit substrate without the copper foil, and visually observing whether the surface of the second circuit substrate without the copper foil has poor uniformity or void defects. If the appearance uniformity is good and no vacuole is generated, the inner layer circuit board has good glue filling performance (marked as qualified, which represents passing the test); if the appearance is uneven or bubbles are generated, the inner layer circuit board has poor glue filling performance (marked as unqualified, which represents that the test is failed).
The compositions and characteristic test results of the examples and comparative examples are shown in the following tables 1 to 4:
TABLE 1 composition (unit: parts by weight) of resin compositions of examples and results of characteristic tests
Figure BDA0001899245680000171
Figure BDA0001899245680000181
TABLE 2 composition of resin compositions of examples (unit: parts by weight) and results of characteristic tests
Figure BDA0001899245680000182
Figure BDA0001899245680000191
TABLE 3 composition of resin compositions of examples (unit: parts by weight) and results of characteristic tests
Figure BDA0001899245680000192
Figure BDA0001899245680000201
TABLE 4 composition (unit: parts by weight) of resin compositions of comparative examples and results of characteristic tests
Figure BDA0001899245680000202
Figure BDA0001899245680000211
From the above test results, the following phenomenon can be observed.
Example E1 compares to comparative examples C1 and C2, wherein C1 without addition of monofunctional long chain alkyl acrylate monomer increases the minimum kinematic viscosity to 520Pa · s and results of inner layer circuit board underfill test show problems of poor substrate uniformity and void generation; c2 addition of a polyfunctional long-chain alkyl acrylate monomer reduces the glass transition temperature to 180 ℃ and increases the minimum kinematic viscosity to 1500 pas. In contrast, the embodiment E1 can satisfy the glass transition temperature of greater than or equal to 200 ℃, and simultaneously achieve the effects of lower minimum kinematic viscosity and good adhesive filling performance of the inner layer circuit board.
Example E1 compares to comparative examples C3 and C4, where C3 added too little maleimide resin, the glass transition temperature dropped to 165 ℃, and the minimum kinematic viscosity increased to 550Pa · s; c4, when the maleimide resin is excessively added, the drilling reliability is poor, the tension of the copper foil is reduced, and the problems of poor substrate uniformity and void generation appear in the inner layer circuit board adhesive filling test result. In contrast, the embodiment E1 can satisfy the glass transition temperature of greater than or equal to 200 ℃, and simultaneously achieve the effects of lower minimum kinematic viscosity and good adhesive filling performance of the inner layer circuit board.
Example E1 compared to comparative examples C5 to C8, wherein the addition of monofunctional aromatic methacrylate to C5 resulted in poor substrate uniformity and void generation in the inner layer wiring board underfill test; c6 adding trifunctional methyl acrylate, the lowest kinematic viscosity value is increased to 1285 Pa.s, and the problems of poor substrate uniformity and vacuole generation appear in the inner layer circuit board adhesive filling test result; c7 adding difunctional dicyclopentadiene methacrylate, the minimum kinematic viscosity value is increased to 1345 Pa.s, and the problems of poor substrate uniformity and vacuole generation appear in the inner layer circuit board adhesive filling test result, while monofunctional aromatic methacrylate, trifunctional methacrylate and difunctional dicyclopentadiene methacrylate do not belong to monofunctional long-chain alkyl acrylate monomer. C8 adding monofunctional acrylic acid long-chain alkyl ester monomer polymer, minimum kinematic viscosity value increases to 680 Pa.s, and inner layer circuit board underfill test results show that the substrate uniformity is poor and the problem of vacuole generation occurs. In contrast, the embodiment E1 can satisfy the glass transition temperature of greater than or equal to 200 ℃, and simultaneously achieve the effects of lower minimum kinematic viscosity and good adhesive filling performance of the inner layer circuit board.
Examples E10 to E12 and E17 and E18 compare with examples E19 to E22, in which no polyester is used for E19, the dielectric loss rises to 0.0077, and the occurrence of plate explosion phenomenon occurs in the reflow test after drilling, which represents poor reliability of drilling; e20 uses a small amount of naphthalene ring-containing polyester, the dielectric loss is increased to 0.0077, and a reflow test after drilling has the phenomenon of plate explosion, which represents that the reliability of drilling is poor; e21 uses excessive naphthalene ring-containing polyester, and the phenomenon of plate explosion exists in the reflow test after drilling, which means that the reliability of drilling is poor, the pulling force of the copper foil is reduced to 3.5lb/in for a common copper foil, and the pulling force of the copper foil is reduced to 3.4lb/in for an ultrathin carrier; e22 uses dicyclopentadiene-containing polyester to reduce the tension to 3.6lb/in for typical copper foil and to reduce the tension to 3.5lb/in for ultra-thin carrier copper foil. In contrast, the examples E10 to E12, E17 and E18, which did not cause plate burst in the reflow test after drilling, showed that the drilling reliability was good, and the three maintained the level of not less than 4.0lb/in for the tension of the general copper foil and not less than 4.0lb/in for the tension of the ultra-thin carrier copper foil.
The above embodiments are merely exemplary in nature and are not intended to limit the embodiments of the application or uses of these embodiments. The term "exemplary" is used herein to mean serving as an example, instance, or illustration. Any exemplary embodiment herein is not necessarily to be construed as preferred or advantageous over other embodiments.
In addition, while at least one exemplary embodiment or comparative example has been presented in the foregoing detailed description, it should be appreciated that a vast number of variations are possible. It should also be appreciated that the embodiments described herein are not intended to limit the scope, applicability, or configuration of the claimed invention in any way. Rather, the foregoing implementations will provide those skilled in the art with a convenient road map for implementing the described embodiment or embodiments. Furthermore, various changes may be made in the function and arrangement of elements without departing from the scope defined in the claims, and the scope of protection of the claims includes known equivalents and all foreseeable equivalents at the time of filing this patent application.

Claims (14)

1. A resin composition, comprising:
30 parts by weight of a thermosetting resin;
50 to 125 parts by weight of a maleimide resin; and
5 to 35 parts by weight of a monofunctional long-chain alkyl acrylate monomer.
2. The resin composition of claim 1, wherein the thermosetting resin comprises an epoxy resin, a polyphenylene ether resin, a cyanate ester resin, a benzoxazine resin, a phenol resin, styrene maleic anhydride, or a combination thereof.
3. The resin composition according to claim 1, wherein the thermosetting resin comprises 4 to 20 parts by weight of an epoxy resin, 3 to 20 parts by weight of a cyanate ester resin, and 5 to 20 parts by weight of a benzoxazine resin.
4. The resin composition according to claim 1, wherein, the maleimide resin includes 4,4 '-diphenylmethane bismaleimide, phenylmethane maleimide oligomer, m-phenylene bismaleimide, bisphenol a diphenylether bismaleimide, 3' -dimethyl-5,5 '-diethyl-4, 4' -diphenylmethane bismaleimide, 4-methyl-1,3-phenylene bismaleimide, 1,6-bismaleimide- (2,2,4-trimethyl) hexane, 2, 3-dimethyl-phenylmaleimide, 2, 6-dimethyl-phenylmaleimide, N-phenylmaleimide, maleimide compounds containing aliphatic long chain structures, or combinations thereof.
5. The resin composition of claim 1, wherein the monofunctional long chain alkyl acrylate monomer has the following structure:
Figure FDA0001899245670000011
wherein R is hydrogen or C1To C6And n is an integer of 6 to 40.
6. The resin composition of claim 1, wherein the monofunctional long-chain alkyl acrylate monomer has a molecular weight of 1000 or less.
7. The resin composition of claim 1, further comprising the following performance modifiers: small molecule vinyl compound, amine curing agent, phenoxy resin, polyester, polyolefin resin or combination thereof.
8. The resin composition of claim 1, further comprising 20 to 40 parts by weight of a polyester.
9. The resin composition of claim 1, further comprising a flame retardant, an inorganic filler, a hardening accelerator, a solvent, a coupling agent, a colorant, a toughening agent, or a combination thereof.
10. An article made from the resin composition of claim 1, comprising a prepreg, a resin film, a copper-clad resin film, a laminate or a printed circuit board.
11. The article of claim 10 having a glass transition temperature greater than or equal to 200 ℃ as measured by a dynamic mechanical analyzer with reference to the method of IPC-TM-6502.4.24.4.
12. The article of claim 10 having a copper foil tensile force greater than or equal to 3.4lb/in as measured in an universal tensile tester by the method described in IPC-TM-6502.4.8.
13. The article of claim 10 having a minimum kinematic viscosity value less than or equal to 500 Pa-s.
14. The article of claim 10 which is visually free of vacuole development after gel filling testing.
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